Towards effective payoffs in the prisoner's dilemma game on scale-free networks

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dc.creatorSzolnoki, Attila
dc.creatorPerc, Matjaz
dc.creatorDanku, Zsuzsa
dc.date2007-11-26
dc.date.accessioned2026-07-07T09:28:54Z
dc.date.available2026-07-07T09:28:54Z
dc.descriptionWe study the transition towards effective payoffs in the prisoner's dilemma game on scale-free networks by introducing a normalization parameter guiding the system from accumulated payoffs to payoffs normalized with the connectivity of each agent. We show that during this transition the heterogeneity-based ability of scale-free networks to facilitate cooperative behavior deteriorates continuously, eventually collapsing with the results obtained on regular graphs. The strategy donations and adaptation probabilities of agents with different connectivities are studied. Results reveal that strategies generally spread from agents with larger towards agents with smaller degree. However, this strategy adoption flow reverses sharply in the fully normalized payoff limit. Surprisingly, cooperators occupy the hubs even if the averaged cooperation level due to partly normalized payoffs is moderate.
dc.description14 pages, 7 figures, to be published in Physica A
dc.identifierhttps://arxiv.org/abs/0711.4028
dc.identifierhttp://arxiv.org/abs/0711.4028
dc.identifierPhysica A 387 (2008) 2075
dc.identifierdoi:10.1016/j.physa.2007.11.021
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/157592
dc.subjectBiological Physics
dc.subjectStatistical Mechanics
dc.titleTowards effective payoffs in the prisoner's dilemma game on scale-free networks
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